Earthquake (Coseismic Landslide) - Hazard Extent - DCRRA
This earthquake hazard layer represents regions threatened by coseismic landslide. The criteria for coseismic landslide is the intersect of slopes where ground motions from the 2475-year return period earthquake exceed a slope’s critical acceleration.
Coseismic landslides are the movement of rock, soil, or debris down a slope triggered by ground shaking, threatening assets in their paths. A slope’s critical acceleration is a theoretical horizontal acceleration required to reduce the factor of safety of a slope below unity, assuming an infinite slope process with a nominal 3 m depth. Critical acceleration is a function of the strength of the underlying geology, slope angle, saturation, and landslide mechanism. For the provincial-scale hazard threat analysis, assets threatened by coseismic landslide intersect slopes where ground motions from the 2475-year return period earthquake exceed a slope’s critical acceleration.
Limitations
Disaster and Climate Risk and Resilience Assessment (DCRRA) Hazard Threat Analysis (2024), details seismic hazard limitations on pages A-17, A-18.
Source
DCRRA Hazard Exposure Analysis Appendix A - Seismic (2024)Datasets available for download
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hazard_coseismicFeature Layer
Layer 148 via ArcGIS REST API
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hazard_coseismic (Explore)HTML
Explore hazard_coseismic on ArcGIS Hub
Additional Info
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| Last Updated | March 25, 2026, 01:46 (UTC) |
| Created | March 25, 2026, 01:46 (UTC) |
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Domain / Topic
Domain or topic of the dataset being cataloged.
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Title
Title for the Dataset.
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Earthquake (Coseismic Landslide) - Hazard Extent - DCRRA |
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Description
A description of the dataset.
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This earthquake hazard layer represents regions threatened by coseismic landslide. The criteria for coseismic landslide is the intersect of slopes where ground motions from the 2475-year return period earthquake exceed a slope’s critical acceleration. Coseismic landslides are the movement of rock, soil, or debris down a slope triggered by ground shaking, threatening assets in their paths. A slope’s critical acceleration is a theoretical horizontal acceleration required to reduce the factor of safety of a slope below unity, assuming an infinite slope process with a nominal 3 m depth. Critical acceleration is a function of the strength of the underlying geology, slope angle, saturation, and landslide mechanism. For the provincial-scale hazard threat analysis, assets threatened by coseismic landslide intersect slopes where ground motions from the 2475-year return period earthquake exceed a slope’s critical acceleration. LimitationsDisaster and Climate Risk and Resilience Assessment (DCRRA) Hazard Threat Analysis (2024), details seismic hazard limitations on pages A-17, A-18. SourceDCRRA Hazard Exposure Analysis Appendix A - Seismic (2024) |
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Tags / Keywords
Keywords/tags categorizing the dataset.
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Format (CSV, XLS, TXT, PDF, etc)
File format of the dataset.
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Dataset Size
Dataset size in megabytes.
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1752016.0 |
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Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
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Published Date
Published date of the dataset.
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2024-07-04 |
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Time Period Data Span (start date)
Start date of the data in the dataset.
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Time Period Data Span (end date)
End date of time data in the dataset.
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GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
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Identifier
Unique identifier for the dataset.
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d8a60e61c8f7428895339544cae8c1b7 |
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Language
Language(s) of the dataset
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English |
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Link to dataset description
A URL to an external document describing the dataset.
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https://bchazardinsightstool-bcgov03.hub.arcgis.com/datasets/bcgov03::earthquake-coseismic-landslide-hazard-extent-dcrra |
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Persistent Identifier
Data is identified by a persistent identifier.
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Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
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Contains data about individuals
Does the data hold data about individuals?
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Contains data about identifiable individuals
Does the data hold identifiable data about individual?
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Contains Indigenous Data
Does the data hold data about Indigenous communities?
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Portal Type
Platform type of the source portal.
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Version
Version of the datatset
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None |
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Source
Source of the dataset.
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None |
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Version notes
Version notes about the dataset.
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Is version of another dataset
Link to dataset that it is a version of.
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Other versions
Link to datasets that are versions of it.
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Provenance Text
Provenance Text of the data.
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EM GeoHub |
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Provenance URL
Provenance URL of the data.
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Temporal resolution
Describes how granular the date/time data in the dataset is.
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GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
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GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
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Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
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Community Permission
Community permission (who gave permission).
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The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
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Number of data rows
If tabular dataset, total number of rows.
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852222 |
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Number of data columns
If tabular dataset, total number of unique columns.
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5 |
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Number of data cells
If tabular dataset, total number of cells with data.
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4261110 |
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Number of data relations
If RDF dataset, total number of triples.
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Number of entities
If RDF dataset, total number of entities.
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Number of data properties
If RDF dataset, total number of unique properties used by the triples.
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Data quality
Describes the quality of the data in the dataset.
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Metric for data quality
A metric used to measure the quality of the data, such as missing values or invalid formats.
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